The belt snubber bearing has been moved from behind the freewheel to under. This should improve its belt slip stopping ability, and also make the freewheel less exposed to the elements (dust, water, etc.). So far the redesign is on Strida LT only, but I suspect that it will be used on the 2010 5.x after the old stock runs out.
Skywalker, the moderator of Taiwan Strida User Club forums, posted some photos of new Strida shown at the Taipei Cycle Show 2010:
Three standard models for international market (two-speed, LT, and 18")
Quick release saddle height adjustment system (standard on two-speed and 18" models, not sure if it will be sold as a upgrade kit)
Handlebar easy release button (upgrade kit available in Taiwan for about US$6, not sure about other countries)
Water/dust proof alloy freewheel
Mudguard for 18" wheel
See more photos and read the full report here http://tw.myblog.yahoo.com/Skywalker-Strida/article?mid=2476
Woo. I’ve upgraded my Strida 5 to 18" but changed back to the 16" as I really need mudguards where I live and the existing ones can’t be used with the larger wheels. Are these new guards available in the UK yet?