said by GolfDude:That letter/post does not mention reboots required to get the new guide, which makes it less likely the message the OP got is about the guide (which is still coming soon based on what has been posted).
It appears the Original OP is Correct:
Your new program guide is coming.
Faster. Easier. More intelligent.
We've completely reinvented your program guide to make everything about
your Optimum experience better, with a lot of exciting new choices and
- Improved guide layout for easier & faster searching.
- Look back to see when programs you missed will air again.
- Use buttons on your remote as shortcuts to get directly to features like On Demand and Search.
You might see the new guide available on some of your cable boxes before others. Don't worry. We'll be updating all of your cable boxes as soon as possible. To get to the guide, press the GUIDE button or the iO button on your remote.
Click here for more details: