Hello!
No reason to worry, for the ASIC attack prevention we are urgently transfer to monero v7, all coins, mined before the block 28864 are valid, all further blocks are going to be blocked by the system.
Read what you said again. You basically admit further mining is not possible at all. I understand you didn't mean so, but why so promising company with a bright future can't hire a professional PR manager with a decent English?
And isn't it is a good practice to inform miners in advance?