So far no bugs have been reported, which is a good sign.
However I have decided to release v1.1, which is just a very minor update. The only change since v1.0 is that a ROM check now occurs when you first start. This ROM check basically warns you if you do not have the correct version of the ROM (just a checksum comparison). Remember the correct version is 'F-Zero (U) [!].smc'.
You can choose to ignore this warning if you know you are using a hacked ROM (with new tracks for example) and are confident it will work. But if it doesn't, it means the code FZVS is supposed to be patching is not at the right locations.