They are apparent by looking at allocations in Realtimettains.
My understanding is that the post above is correct and they are the only diagrams at present.
Not presently, but it was certainly planned as you say.
They're scheduled to be introduced on the Cardiff-Manchester route in December, which will include running on Saturdays, but at the moment those are the only two diagrams in operation.
Will the new Cardiff / Manchester services also have catering like the Holyhead Trains do at the moment?
If you're referring to the MK4 sets running on that line, then, yes, it's highly likely TfW is going to keep the buffet car on with a first class.
That's probably intentional for now, to avoid raising peoples's expectations until the 175s are swapped out.
I suspect it's as much a capacity issue. A 4 car MKIV set will have fewer standard seats than a 3 car 175, and for some of the services planned to be worked from December that will be a problem - so declassifying 1st gets around that.
So perhaps a measure to remain in place until the fifth carriage can be added. It's worth noting that, in my experience, Holyhead to Cardiff services tended to more often be 2-175 (3-175 found usually on Manchesters) which could be why the same measure wasn't considered necessary for Holyhead services. That isn't to deny that the Holyhead 67s don't get very busy, which they often do leaving Cardiff.