The next @Shopstr Markets release will be focused on allowing merchants to customize their shop UI a bit to start moving towards a more personalized experience.
@Cypher will be getting NIP-99 compatibility to offer a similar experience to npub.pro, but tailored for web shops.
@npub1gzuu...a5ds has been working on revamping plebeian.market from the ground up; excited to see how that comes out! We're also planning to work on an update to the NIP-15 and NIP-99 specs to be more interoperable and robust during SEC-03.
Amethyst and Coracle are also both still supporting NIP-99 listings.