According to press release, regional servcies will become 1 class and you have to buy food on board! I suppose it helped Aer Lingus but it seems odd that this will leave BA with very different levels of service, but hey ho!
Press release:
http://www.britishairways.com/travel/bapress/public/en_gb
Press release:
http://www.britishairways.com/travel/bapress/public/en_gb