Since Apple formally announced it, it will probably show before end of year. It seems a good guess- but only a guess- that it will be a big announcement (again) in one of the Fall events including perhaps an
TV event per teasers dropped at the WWDC announcement. My guess: dedicated
TV event probably with a hardware update and this will be re-announced there too.
Stuttering hardware that has worked fine in the past could be a hardware issue but is probably a broadband or wifi issue at your place. I suggest experiments to rule out such possibilities. For example, if the Roku has an ethernet port, test making a wired connection to see if the stuttering persists without relying on wifi. If it solves it, the problem is not the box but the wifi. Or vice versa (if you are already wired, test using wifi to rule out a faulty ethernet cable). Have you reset the box recently (unplug, wait 30-60 seconds, plug it back in)?
If you are leaning on wifi, is the wifi router far from the location of the Roku box? Can you get them closer together? Is there any wifi interfering-stuff between the router and the box? Either scenario could still deliver wifi to the box but maybe at a too-constrained level for smooth streaming.
Have you (or anyone) shared your wifi password with some neighbors and now they may be secretly hogging your wifi bandwidth? Change your password and test for stuttering again.
Do you have another Roku or perhaps have a friend with the same box? If so, can you sub in the other box and see if it also stutters in your setup, location & environment. OR take your box to a friend's place with the same box and swap them out in their setup, location & environment. Then see if it also stutters there. If it works fine in their setup, consider what is different about their setup vs. yours.
Is the stuttering occurring with video that previously played just fine? Or could the video be encoded beyond the box's capabilities? If you have a video that has previously played just fine on that box, test with it again. If you are getting video from unknown sources and/or encoding video yourself at settings beyond the playback hardware capabilities, that could be causing the stuttering.
Have you tested the basics? Swapping out HDMI cables to eliminate any possibilities there (has the cat or dog chewed an HDMI cable)? Is an HDMI connection loose somewhere? Have you tested a switch from one HDMI input on the TV to another?
Have you run speedtest when you see this stuttering to see if you have enough broadband speed for streaming video? For example, is your broadband too slow for what you are streaming? Are multiple other people burning a lot of bandwidth at the same time you are trying to stream video? Are 2, 3 or 4+ other devices in your home also demanding a lot of wifi or wired bandwidth while you are trying to stream video? Etc. Run speedtest WHEN the stuttering is occurring, not just once at some other point of time and assuming you consistently get whatever speed it shows.
Is it an area thing? For example, do you see stuttering no matter what time of day you try to watch something or only- perhaps- in the evening, when- probably- lots of other people in your area are also cranking up the broadband demands? Some broadband systems will be negatively affected during higher-demand times. Running speedtest several times throughout the day- but especially when you are seeing the stuttering- may reveal this issue.
In short: lots of possibilities that aren't necessarily failing hardware in the Roku. It's not hard to test many of the potential issues above to see if you can narrow the issue down to a specific cause. If it is NOT the Roku, a new
TV hooked up to the same setup is not necessarily going to improve the situation. In other words, if it's an HDMI cable, or broadband constraints, or family/friends broadband hogging, etc, you'll probably still get the stuttering even if you change boxes.
