Do you make Flash content? Do you have Flash content on the web? If so, you owe it to yourself and your clients to check this content against the upcoming version 10.1 beta player. There’s lots of new goodies in this player, but as you – a developer yourself – know, when you add and change stuff, you risk breaking existing stuff. The Flash player has this problem 1000 times over – it has to run all the existing Flash content created by millions of developers all over the world, and with minimum failure. A lot of testing is done internally obviously, but only you will know if your content runs without any hitches.
So if you haven’t already done so, install 10.1 and take your existing or soon to be released content on a spin with it. Hopefully it works fine. You might need to fix a few things on your end, or in the worst case, you might need Adobe to fix something, in which case you should submit a bug report now, before it’s too late.
Ted Patrick has more details on what to do and how to do it here.
This also goes for any AIR applications you may have out there. Your users will soon be updating that as well, and you should make sure your apps run well on it.