DH and I just realized that between the 2 of us, we are in 3 weddings this year!
My BFF is getting married in June, her colors are grey and yellow (LOVE) but if she makes me wear a canary yellow dress I will not be happy. Dark hair & olive skin does not go with canary yellow. Hopefully she picks a grey dress. This wedding is in Orlando
My old co-worker asked me to be in her wedding on October 15th also in Orlando. I didn't even invite her to my wedding, so I thought it was a little odd I'm in hers but it should be fun. It's smack dab in the middle of DH and my bday (his is Oct 9, mine is 19th) so maybe we can turn it into something fun for us too. Food & Wine Fest, anyone?
Then, DHs friend just asked him to be in his in November in Arizona! Right now, he agreed to it, but we are debating this because we just don't know if we can afford it. What is the etiquette on this y'all? Do we tell him we're not sure now about our financial situation or wait closer until Nov and figure things out then? Right now, my DH is looking for a job and if he doesn't get one soon, we're going to be in a real tough financial spot. Obviously, I'm hoping that's not the case but you never know.

Re: 2011, the year of weddings!
They always come in waves it seems! Our busy wedding year was 2009.
I'm not sure what the etiquette is, but I don't see a problem with just being truthful with H's friend and his fiance. If I were your H, I'd approach it honestly and say that he'd love to be in the wedding, but it completely depends on whether or not he gets a job in the next x months (depending on your financial situation). I'd also add something like I completely understand if this is an inconvenience to the wedding plans though and I would gracefully decline if it caused any burden.
That seems rambly, but it makes sense in my head.
I completely agree with LB. Just be honest with them. The sooner the better, this way if they'd rather ask someone else they have the option.
We have a wedding in Feb that H is in but that's it for us this year (so far). We have several close friends (all of whom were in our wedding or traveled far to attend ours) who I wouldn't be surprised to hear engagement announcements from in the next year so I have a bad feeling that next year will be crazy for us. Even if we're not asked to be in their weddings we'll probably feel obligated to go which will get expensive. Please excuse the run-on sentences. I'm exhausted.