I noticed if you do a search on Amazon, there's a new never before seen color ways of the Twister line with a release date of Sept 15?:

3x110: https://smile.amazon.com/Rollerblade-Twister-Unisex-Fitness-Performance/dp/B099SCJGMX/ref=sr_1_11?dchild=1&keywords=rollerblade+hydrogen+110&qid=1628721705&sr=8-11

4x80: https://smile.amazon.com/Rollerblade-Twister-Fitness-Inline-Performance/dp/B099SCNF34/ref=sr_1_3?dchild=1&keywords=rollerblade+twister&qid=1628722737&sr=8-3

Additionally, there seem to be some new features:

Two in one sizing with Footboard Sizer

SKATE LINER PLUS PROVIDES A TRUE PREMIUM FIT FOR SKATING with its new padding design and anatomical fit. The new Comfort Flex tongue makes skating more comfortable with its cushioned wings and reinforced median bar to wrap around the shin better for improved flex and control while maintaining its shape consistently.

Not sure what a footboard sizer is, anyone know?

Searching more broadly, information is sparse, though there is an Instagram account (not Rollerblade's official account) that does have some mock-up illustrations that match the color schemes in the Amazon listings - see here and here. Said Instagram posts claim that these colorways are to be featured in Rollerblade's 2022 collection.