Kermit, or no Kermit, they refer to the Sesame Street characters as Muppets anyway, and have to have the copyright info. So we'll probably see it on the upcoming season before we see this DVD release.
I don't think you quite understand what I was wondering. I wasn't wondering if they'll drop the "Kermit the Frog is a trademark of Muppets Studio" credit, I was wondering if it'll now refer to Kermit as a trademark of the Walt Disney Company instead, since Disney seems to be embracing its ownership of the Muppets now.
Looking at the Muppet Wiki guides, I've found that two of these five episodes will NOT be sponsored by the number 2 (12th season premiere was sponsored by 8, 13th sponsored by 12). It's a little interesting to see that after 11 seasons of the number 2 sponsoring the season premieres (since the numbers seemed to sponsor in numerical order) we get two in a row sponsored by other numbers, and then two in a row sponsored by 2. Yeah, it shouldn't be that odd, considering at the time they had no idea they'd be compiling the season premieres together on a commercial video format.
I know it's likely too soon to be talking about a potential volume 5, and I'm not sure if it'd be better to start another thread, but I've been looking at the guides for the season 21-24 premieres, and there's some interesting stuff there. The season 21 guide was compiled from a japanese program guide (meaning there's no known video footage of that episode out there yet), and the season 22 premiere is available at the Paley Center for Media (not sure if anybody has a copy). The season 21 premiere properly introduces Preston Rabbit, a character I don't remember nor am too enthusiastic to see, but after reading the guide he could be a great character. And the season 22 episode, where the cast honors Oscar on "Grouch Appreciation Day", has a number of old school characters in the plot, including Bruno, Simon Soundman, and the Two-Headed Monster (and Preston Rabbit again).
I've also noticed that Monsterpiece Theater: Gone with the Wind appears in both the season 22 and 23 premieres. Muppet Wiki notes that the 23 premiere shows it with the altered Alistair Cookie intro, but doesn't say which version is in the 22 premiere, but I assume it's the version with the original intro (it also doesn't say which opening it has, but I assume it's the longer library opening... Muppet Wiki does note one early-1990s episode that has Gone with the Wind with the second Monsterpiece Theater opening but also with the original Alistair Cookie scenes). It would be interesting to see that segment included twice, with different edits. I've also noticed that two of the Newsflash segments involving Little Red Riding Hood (the two that are NOT on the Silly Storytime DVD or at sesamestreet.org) appear in the season 21-25 premieres.