Based on the available information, it looks like both Blu-rays will show the movies in the widescreen 1.85:1 ratio (the same as the current US DVD releases), and will not include any bonus features. The list price for each disc is $24.99, but you should be able to get them for under $20 each.
Both films were released on Blu-ray disc in Australia last year; while the Australian Blu-ray of Snoopy Come Home looked fine, the picture of the Australian A Boy Named Charlie Brown was incorrectly stretched out and distorted. Hopefully that error won't be repeated in the US release. We have no reason to suspect it's likely to be a problem, but we mention it because a couple of people have called our attention to the Australian issue.
And no, there's no word on when or if the other two classic animated Peanuts movies will be released on Blu-ray - they were only recently finally released on DVD! - but we'll keep our fingers crossed, and in the meantime, we'll be able to enjoy seeing every little detail of the first two.
This is Warner's first release of Charlie Brown's All Stars on a stand-alone disc. While the press release says "includes bonus material," it doesn't specify what that bonus material might be. However, the cover image says "includes a bonus Peanuts special," so it seems likely a second Peanuts episode will be included. (Guess it'll be a surprise, since they don't want to tell us in advance.) Given that Warner's "50th anniversary" releases of A Charlie Brown Christmas and It's Great Pumpkin, Charlie Brown didn't include new bonus material, it seems doubtful there will be any new behind-the-scenes features on this new Charlie Brown All Stars disc. If we learn otherwise, we'll let you know.
The Charlie Brown All Stars 50th Anniversary Deluxe Edition DVD will be released on October 4, 2016, and will have a suggested retail price of $19.98 .
If you don't own this special already, we suspect you might be better off getting the similarly priced Peanuts 1960's Collection box set instead, which also includes several other fine 1960's Peanuts specials.