My 2-cents worth.
I believe that Live Nation are behind a lot of this - U2 signed a BIG deal with them last year (I think for 10 years) that covers pretty much everything around U2 tours. I'm guessing that the deal was struck between LN and Blackberry. Furthermore the 'official' response from the band has been made by the manager - Paul McGuinness - and not any of the band .... further proof that this was a cold business decision, rather than anything to do with the band.
I'm surprised at all the negative posts about the new album - I'm not their biggest fan, but the new album has, largely, been positively received by the critics. Yup, they're media whores at the moment, but they need profile to sell product. To those that long for the 'I will follow' and 'Gloria' days, can I point out that these were (at the time) minor hits in Ireland and the UK - didn't even register in the US. What have they done since? - Bad, One, Elevation, Vertigo, Stuck in a moment, etc. Compare their recent album sales with those of the other aging wrinklies - The Stones - and you should be able to quickly garner which ones have become tribute acts of themselves. You mightn't like it, but it seems lots do. At least they do continue to make 'new' music - and I'm sure the bean counters at Apple are enjoying the additional revenue that's now rolling through iTunes as a result of No Line on the Horizon.