Potential Daily Mail LEGO promo list?

Now usually we are the first to get news on any upcoming LEGO promotions in UK papers but someone on the Brickset forum has posted a "list" from an un-credited source and reckons the next promotion will be May 21st till 29th. Now it's rather strange to get news of promotion so far in advance and as the source is uncredited please take this has a rumor for now Here is the line up:

• 30275 Star Wars
• 30348 City mini dumper
• 30446 Super Heroes The batmobile
• 30371 Nexo Knights cycle
• 30278 Star Wars Poe X-wing
• 30396 Friends Cupcake stall
• 30349 City sports car
• 30604 Super Heroes Cosmic boy
• 30421 Ninjas Skybound plane

We will get on to our known source for confirmation ASAP, so please watch this space :-) Update: Spoken to our source who has been correct on every promotion since 2012 and they said the following "Yep no promotion has been confirmed nor have sets and it certainly won't include Cosmic Boy. Pure rumour nothing more, all you have to do is get list of this years polybags make up a list and you could get some right"