Disclaimer: I don't work for SXM. I do know how to download the channel guide and look for changes. Please note that SXM may change the API at any time - there are differences between today's download and the Player channel list that indicate that this could have already happened.

Edited Nov. 2 for a couple of fixes/additions to the holiday channels.

Channel 5 (PopRocks) rebrands as "'90s to 2020s pop & rock hits".

Channel 17 drops Billy Joel to become Fallon Holiday Seasoning.

Channel 21 (Underground Garage) drops Little Steven from its branding and is now "Maximum rock & roll".

Channel 38 is still Ozzy's Boneyard but changes branding to remove Ozzy ("Hard and heavy classic rock").

Channel 43 (Rock the Bells Radio) removes LL Cool J from the branding ("Classic & timeless hip hop XL").

40's Junction moves from Channel 71 to Channel 296.

Channel 71 is not branded in the list, it is Holiday Traditions (thanks u/pope307).

Channel 79 is holiday pop-up Holly ("Modern holiday hits").

Channel 105 drops Scream Radio, adds Hallmark Radio ("Timeless Christmas music").

Channel 503 is the Billboard Music Awards channel.

Channel 504 drops Coldplay Radio.

Channel 505 is Linkin Park Radio.

Channel 510 drops Luke Bryan Radio.

Channel 511 drops Carlos Vives Radio.

Holiday Channels:

606 - Country Christmas - Country Christmas music

608 - Jolly Christmas - Upbeat feel-good holiday hits

610 - Christmas Spirit - Christian Christmas music

612 - Smokey's Holiday Soul Town - R&B/Soul Christmas favorites

614 - Jingle Jamz - Holiday hip-hop and R&B

616 - Real Jazz Holiday - Classic & new jazz Christmas

618 - Cool Jazz Christmas - Smooth contemporary jazz Xmas

620 - Mannheim Steamroller Channel - Mannheim Steamroller Christmas

621 - Trans-Siberian Orchestra Radio - Trans-Siberian Orchestra Xmas

622 - Holiday Pops - Classical Christmas carols

624 - Holiday Instrumentals - Instrumental holiday hits

626 - Navidad - Latin holiday music

628 - Rockin' Xmas - Jingle meets guitar jams

630 - Acoustic Christmas - Acoustic holiday tunes

632 - Holiday Chill-Out - Downtempo holiday chill music

634 - 70s/80s Holidays - Holiday hits of the 70s & 80s

636 - Kids Christmas - Kid-friendly holiday songs

639 - Holidays with Jessi & Friends - Music & festive fun!

639 - Sleep Christmas - Relaxing Xmas music

640 - Noël Incontournable · Francophone holiday music

Not all of the Christmas channels are showing up in the Player but they are in the channel list in the background. Yes, there are two Channels 639.

Happy November 1! :)