Craig--
Doesn't sound as if you're holding up your end of the bargain.
1) You don't say which facility you wrote to--Leica USA or Leica Solms? (This may make little difference since Germany sends some requests to the US.)
2) You don't say whom you wrote to in that facility. Address it directly to a person competent to respond.
3) You're not the only one complaining; they want to supply the information as soon as possible. But if the only information they have is that the update will come shortly, you've already got the latest information. Judging from the tone of what you just showed us, you might not respond happily to an e-mail that said simply, "Much to our regret some customers are experiencing a slight colour cast when playing pictures back on the modules display after updating with the version 1.2. Leica Camera will provide an improved version of the new firmware regarding this function shortly."
4) E-mail is not the best way to handle such matters. Send a letter, or pick up the phone.
5) Don't blame Leica for an issue with their suppliers.
Just a couple things to consider.
Cordially,
--HC