As much as possible, I will try to make bugfixes on WM 2.x available for the imminent future, just as 2.3.7 was. This is mostly a factor of if the fix can be back-ported with reasonable effort or not.
However.. I do believe it's important to be clear that as we go forward further and the new version diverges, this will not always be possible. At some point, bugfixes in 2.x will cease. After all, WM 1.x certainly has bugs in it, but there's no practical way to fix them 8 years after the fact, nor do I believe that it is reasonable to.
Glad to hear you're looking forward to WM3, the next couple updates are shaping up to be pretty fantastic.