Glenn Hughes has announced that he will appear at the Sunflower Jam in London on April 4:
My manager and I have been working with Jon’s manager , Tarquin and Jacky Paice and Vicky , Jon’s wife , so that I could clear my schedule to appear – to thank Jon and our MK3 &4 fans for their love ..so glad to announce this to you ..
He later added that reunion with Coverdale is not in the books:
David cannot attend : I will gladly be there for him to share his love for Jon
Thanks to Daniel Bengtsson for the info.