btonsick
I noticed the same thing this morning on my Ultra 4660 (OS 12.0). On my RokuTV (OS 12.5), I still have channel numbers for the LiveTV streaming channels on the Roku Channel.
Looks like Roku is updating the Roku Channel LiveTV Guide to provide for the removal of channel numbers. (https://www.roku.com/blog/os-12-5), so will just start pushing it to devices. (thanks to renojim for pointing this out in another thread).
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Don't really care for this unnumbered list as it is actually more unorganized. (supposedly 12.5 will allow user to personalize/order your streaming channels, but of course has not yet been implemented. Roku is infamous for pushing only half of a feature on release). If you want to switch channels using Voice Remote, you now need to know the "Channel Name". When saying the Channel Name, a submenu pops up asking whether to switch to the Chanel Name on LiveTV or install the Channel Name standalone chanel/app. Prior to this, you only needed to say the "Channel Number" into the Voice Remote and the channel automatically switched to said "Channel Number".
Can no longer simply share with someone where a channel is located by number. Now need to tell them "between channel A and channel B". Does not help that the Categories section on left is also incomplete and missing channels that should be included in the selected Category.
Not an improvement in my opinion.