HTC are getting used to rolling out fixes now. I for one am certainly happy to see these updates being released rather than just leaving the bugs out there.
This one related to the HTC Touch2, and allows you to update the weather through WiFi, 3G or 2G connections. The official info is:-
This update for HTC Touch2 allows us to bring you updates wherever your location, so you know the relevant weather information for where you are, no matter if you are on a 3G or a 2G network.
Download the update here.