To be honest, this isn't the first release for the complete series (there was another one a few years prior), but the earlier one was one of those bulkier box types which quickly disappeared from shelves (Batman Beyond actually maintains a fairly large yet cult fanbase) and now sells for trillions of dollars on Ebay. (Just kidding: it isn't trillions, but you catch my drift.) So it's nice that this one is actually more shelf-friendly and much more affordably priced: this morning it's showing on Amazon as a pre-order for around $60.
And -- dare I say -- that's just in time for holiday shopping?
Here's the link to the announcement over on TVShowsOnDVD.com (a terrific site for those who haven't yet discovered it). The info provides some of the specs for those who really wish to know more about it.