Still no sign of an order announcement but we do have some confirmations and some speculation:

Steven Knight Media have confirmed on the Fleet Rambling page of their website that Mansfield are due a batch of E400MMCs later in the year to replace 9 year old MAN E300s and 4 year old E300s on 'Pronto'.
Meanwhile, it has been mentioned on the 'Travel South Yorkshire' forum that new deckers (chassis type unconfirmed) are due for Chesterfield - either for services 50/50a/50b (Sheffield to Chesterfield via Eckington and Whittington) which is rumoured to be going 'Gold'; or service X17 (Sheffield to Chesterfield and Matlock), for which there are some 'improvements' coming soon. Rumour are that the X17 may be extended from Sheffield City Centre to Meadowhall - given the recent commercial risks made by Yorkshire (the X65 between Barnsley and Meadowhall, the X10 between Barnsley and Leeds and the 54/56 extensions to East Midlands Designer Outlet), that could be reality rather than rumour.