I believe the issue is even more recent. First off, I've seen that apps get updated like in waves. I normally sync and back up the iGadgets on the Mac either once a week or when the App Store in each warns that I have many app updates pending. I have a 700+ app collection, of which about 450 reside at any one time on the devices. In the past 96 hours or so, I've seen an incredibly large number of apps get updated. We're talking of close to 50 or so.
On Sunday, about 15 apps got updated. No problems.
On Monday, another bunch of 10 or so. No problem.
Tuesday and Wednesday had very few (<6) so I skipped.
Yesterday the pile had grown to 18 or so. When I click Update All Apps, the problem reared its ugly head. Took a lot of manual retries on apps such as Lightroom, Dolphin and Skype before they finally got updated on the Mac's local iTunes Library, from whence they'd get synced on the devices. Funny cause Skype for iPhone balked several times but Skype for iPad downloaded at first attempt.
Thus an exercise in perseverance.