Serious question: which moves would that be? I seem to have missed them.
On the "support for DMs" front, there's their newfound willingness to put out adventures again, and that they've started rereleasing the classic materials in PDF and developed a 5e that seems to allow for easy conversion. And, actually, with regard to 5e they seem to have swung back towards an edition that supports (and indeed requires) much more DM control, rather than the previous editions that tried to lock everything down in rules (and so were a boon to rules-lawyer players).
Of course, I might be misinterpreting all of that.
I don't think we'll see any substantial online support from WotC.
I'm rather concerned at the total silence surrounding any 5e version of the DDI. That does suggest to me that there may not be one - that the 4e version will remain active until such time as its not worth keeping going* and then they'll pull the plug.
* The running costs for it are fairly negligible, but there will come a point where the servers need upgraded and the new OS isn't quite compatible, or something similar. At which point, they may elect not to pay the cost to upgrade.
However, even though the 4e DDI offering was disappointing (compared to what was promised) they still managed some 80k subscribers. I would have thought that would make
some sort of 5e DDI a no-brainer. At minimum, of course, that could just mean a new Character Builder and Compendium, probably coupled with 'magazines', though those could just be Games Workshop-style adverts in disguise.
But, yeah, I would like to believe that
if there's a 5e DDI then, in addition to the player-side tools, they would take the position that DMs are worth giving extra support, and so we'd get some proper DM-side tools. I will freely admit, however, that that might be wishful thinking on my part - indeed, a part of me still fears 5e may be cancelled before the end of the year.