A military parade was held in Pyongyang in the late hours of Thursday, 14 January 2021, to celebrate the conclusion of the 8th Congress of the Workers’ Party of Korea (WPK). The parade was basically a scaled down version of the 10 October 2020 parade in celebration of the 75th anniversary of the founding of the WPK. The Hwasong series liquid propellant strategic missiles were not included in this latest parade. However, two missiles were displayed for the first time. This short article identifies the military hardware displayed during the parade and provides a detailed description of the two new missiles.
The following equipment  was displayed during the 14 January 2021 parade:
- Two types of self-propelled anti-tank missiles (two formations)
- Self-propelled guns with unmanned turret (one formation)
- Prototype tanks (one formation)
- Self-propelled howitzers (one formation)
- ~300 mm and ~600 mm caliber multiple rocket launchers (three formations)
- Pukguksong-5 submarine launched ballistic missiles (SLBM), displayed for the first time (one formation)
- Suspected short range air defense missiles (one formation)
- Suspected long range air defense missiles, possibly KN-06 (The “KN-XX” is the US government designation as the missile’s official name has not been confirmed. One formation)
- Suspected land attack cruise missiles (one formation)
- KN-23 and KN-24 short range ballistic missiles (two formations)
- Short- to medium-range ballistic missiles, displayed for the first time (one formation)
With the exception of two previously undisplayed missiles (the Pukguksong-5 SLBM and the new type of short- to medium-range ballistic missile), images of all of the military hardware showcased during the recent parade can be seen in ONN’s missile viewbook  for the 10 October 2020 military parade.
Two new missiles
The most obvious difference between the Pukguksong-4 (only displayed during the 10 October 2020 parade) and the Pukguksong-5 is that the latter is visibly longer. Both missiles are carried by the same type of display trailer. However, while the trailer carrying the Pukguksong-4 had sufficient space for seats for soldiers (as seen in the image below), there is no such space on the trailer carrying the Pukguksong-5 due to the lengthened body and payload fairing of the missile.
Pukguksong-4 during 10 October 2020 parade (left) and Pukguksong-5 during 14 January 2021 parade (right). The yellow boxes highlight the space between the missiles and the trailers, which, as indicated by the two green lines, suggest that the Pukguksong-5 is placed at a slightly more elevated position than the Pukguksong-4, possibly due to its lengthened body. The red lines show the height difference between the missiles and the tops of the truck cabins. In general, there appears to be no significant increase in diameter for the Pukguksong-5. Source: KCNA
Both the Pukguksong-4 and the Pukguksong-5 are of a two-stage solid fuel design, although the possibility that a third stage motor may be placed inside the payload fairing cannot be completely ruled out. Neither missiles have been flight tested; both are generally similar in design to the Pukguksong-3,  which has only been flight tested once (in October 2019), according to publicly available information.
Short- to medium-range ballistic missile
This new solid fuel ballistic missile shares some similarities with the KN-23  and KN-24.  However, the new missile is distinguishable by its five-axle truck. By contrast, the KN-23’s truck has four axles (the shorter KN-24 is carried by a tracked chassis). This suggests that the new missile is longer and thus heavier than the KN-23.
KN-23 (left) and the new solid fuel ballistic missile carried by a lengthened KN-23 truck (right). The truck cabin has also been modified. Source: KCNA
Left to right: KN-23, KN-24 and the new missiles revealed in the parade. While in general the new missiles appeared to be a lengthened KN-23, the nose cone section is more similar to that of a KN-24. Source: KCNA
The KN-23 and KN-24 ballistic missiles meet the criteria for a hypersonic weapon in that they reportedly are maneuverable  and have reached a top speed above Mach 6.  It is reasonable to assume that the new missile has a similar flight profile and likely the longest range of the three types of missiles. It is uncertain whether the DPRK will deploy all three missiles, or if there will be a selection process in the future. According to a summary of the report delivered by Kim Jong Un during the 8th WPK Congress,  the three types could all be nuclear capable.