So far, there's been no further plans from spondoolies. They've gone bankrupt and there's probably going to be nothing more from them. Quite a shame, since their miners were actually comparable to Antminers at one point; ever since Avalon really took over, spondoolies got weaker and just went kaput. I'd suggest you sell your miners on either eBay or Amazon, or use escrow and sell here on bitcointalk- I suggest the latter, because you can get reliable escrow, and no fees(except for escrow)! Much more secure than eBay, as people have done chargebacks and have been left high and dry. Their miners are very reliable for people with cheap electricity, but I suggest you sell now- SP20Es are being sold for under 150$ now, and will probably go lower as time goes on.
I think they are at the point there is no "further plans". With going bankrupt after they were purchased... I doubt anyone else is throwing money at them like BTCS did. At think point I think we can count on anything that was announced (like sp50) being something that will never exist. And I could be wrong on that but I just don't see more money being put in them.
But yes I think we all agree sell the SP gear if not "free electricity". They are only going to get less and less valuable.