I'm about to go on a 2 week family holiday myself but i'll no doubt be reading and posting in forums, I'll also be working from time to time despite being somewhere with patchy internet service. If something is important to me I can't just switch off and forget about it (though maybe life would be a lot more relaxed if I could!).
If the OctoCoin project has a real cash investor(s) as suggested you can bet they'll be constantly demanding and getting progress updates whereas we ask politely but hardly get any. Of course that's the dev's prerogative but it does suggest the coin side of things is the least important part of their plans especially without any real indication as to how it integrates into the bigger picture in a way that any other coin couldn't.Being a complete control freak, a coin with an enigmatic dev team is probably the worst thing I could have picked to get so heavily invested in.
It could equally be that the investors have final say on what news is delivered and when. Sort of like a traditional games development model with a publisher in control and a developer not able to release news without approval. My point is we don't know what is going on behind the scenes (and we have known that we don't know for quite a long time).
Regarding the bigger picture, what I think we do know is that the reason the apps are being kept under wraps until they are ready is to prevent hype too early, copycatting of features/innovations before 888's ecosystem is ready and for added wow factor upon release.
PR could have been done differently, the devs could have maybe taken on community managers and such but as you alluded to, the Coin itself may be just the first brick in the project. It's up and running and maybe a tick on the to do list for the much bigger 888 project. The OctoBank is a confirmed 'thing' which builds on the Coin and is probably central to the ecosystem allowing the other apps to build on it afterwards.
It's probably going to be true that what 888 becomes won't be something that can't be copied. It will be the sum of a lot of development time rolled out to a degree that it would not be in anyone's interest to 'better it' at what it does because it's already a premium offering. This is where delivering near perfect apps will pay off. Also remember we've got a long way to go til the Vegas days and there's probably a lot of work to do still even after the Devs drop back in on us.
Hold tight and wait for the roller coaster :-) Soon enough we'll know why we've been mining/buying 888