Good morning,
I wouldn't read anything into that, it is probably generic.
I am a current student at OU (awaiting results for year 5 of 6) and I believe results day for the OU is the same for everyone. This year I believe that is Tuesday 22 July.
If you go on your student home page and look at the section in the middle (you may have to scroll down a bit) you should see sections linking to your modules. One of the links in that section should say 'date of module result'. That link will confirm your results day. You should also find it in the Online TMA/EMA service section as well.
One final point to note....they usually release the results on the afternoon/evening before. So if your results day is indeed 22 July, you'll probably find they will be available the evening before.