***However you can not camp at Lone Pine Lake without a backpacking permit on the Main Mt. Whitney Trail. That means you have no chance of camping there now (unless you got a permit for the main Mt. Whitney trail, given out in the Spring in the lottery).***
Not all overnight permits for all dates throughout the entire lottery quota season (May 1 - Nov 1) were given out via the spring lottery. If your schedule has the flexibility to do an overnight on date(s) for which there are either (1) overnight permits left over from the spring lottery and/or (2) available overnight permits due to cancellations (and I understand cancellations have been at or near an all time high this year), then you can still do an overnight on the Main Trail, even if you didn't get an overnight permit during the spring lottery.
Upon checking the Inyo's web site for current camping restrictions on the Main Trail, I found only Mirror Lake and Trailside Meadow to be restricted.
If you want to see how many leftover overnight permits are still available (and on what dates), see the following web page:
http://www.fs.fed.us/r5/inyo/recreation/wild/permits_res/whitney_avail.htmlAdmittedly, at the moment, there are precious few overnight permits left over until around Oct 12. Day-to-day cancellations may be another matter. Understandably, there is no similar calendar displaying those.
CaT