Event manager Matthew Mein said the show is likely to expand into another hall in 2017 adding to halls 17-20 it currently occupies.
He said there was also a possible show feature that Glee had never done before to be revealed.
Mein said rebookings were "stronger than last year" and could be up 10 per cent and the end of the rebooking window.
He said show visitor numbers were probably going to be "very similar to last year" at "7,000-ish" but needed fully auditing and were good in a slightly consolidating market. In 2014 there were 7,000, with 7,600 in 2013 before a move to new halls at Birmingham NEC.
Among visitors in 2016 were 98 per cent of GCA members, B&Q, Bunnings, Argos, Tesco, John Lewis, Robert Dyas, TK Maxx and many independent garden centres.