Looks like Sony is not keen on upgrading it's older Android phone, even though it keeps on introducing new phones like sexy Sony Xperia ARC. The reputation will certainly will keep me away from Sony smartphones, how ever sexy they look.
Sony has confirmed to Android Community that it will not upgrade Sony XPERIA X10, X10 Mini and X10 Mini Pro beyond Android 2.1, eclair. Looks like if the owners of these Sony handsets need Froyo, Gingerbread, they will have to look for unofficial ROMs.
Sony has also mentioned that it will bring some enhancements to the current OS, like the multi touch update in Q1, 2011.
Looks like Nexus S is going to be my Android phone for this year!