My observations:
In 2008 while still on 98.5, the logo was modified so that the slogan on the bottom read "#1 FOR THE 80's, 90's & NOW!"
When they made the move to 104.1, the new logo reverted to saying "TODAY'S BEST VARIETY" on the bottom, even though they still used the #1 For Variety positioner on the air. Today's Best Variety was a registered trademark of CBS Radio as of a year ago. If they still hold that trademark, that
might be a reason for keeping it in the logo.
I noticed that last week, they began using "The Best Mix of the '90s, 2000s & Now" on-air, yet the logo slogan remains. They have not actually said "Today's Best Variety" on-air in over 2 years.
During last week (excluding "Back to the '80s Friday Night" and the "Retro Pop Reunion"), they only played about 5 songs from the '80s. They were a few Bon Jovi songs including "Livin' On A Prayer" (1987) and The Cure's "Just Like Heaven" (1987). These select few appear to be the only '80s hits that were in rotation last week.
Side grammar note; I am very picky on the use of proper grammar. The use of the apostrophe after the year digits is incorrect. The apostrophe should be before them, as to indicate the abbreviation of the year... (i.e., 90's=wrong, '90s=correct).
EDIT: I forgot to mention... during the WBMX legal ID, the female voiceover is saying "A service of Infinity Broadcasting; a CBS Radio company". I find this very strange. At the end of 2005, Infinity was once again known as CBS Radio. There isn't any current branding references of Infinity with any CBS Radio products, except for one:
http://www.infinityradio.com. Strangely enough, all CBS Radio stations are listed, but it shows the Infinity Radio logo. I can't explain this one.