[robko]

I'm thinking somewhere the device interpreted a screen touch as being on the homescreen (and activating the tile for the promo) instead of in the book. This should be a one off (or extremely rare) event if this is the case. I sync at least once a day (for newspaper subscription) and while I have notifications on I've never had that happen. I can't imagine the behaviour could change that much without pushing a firmware update.
For the record, if they did change it to have that being normal behaviour I'd be screaming bloody murder too!