Homecoming Spider-Man has been pretty much confirmed by Diamond for a number of weeks now, and we have now got a hint of what that figure will entail today when Big Bad Toy Store added a silhouette outline of the figure and this description
After his eye-opening appearance in Captain America: Civil War, making a figure of Spidey for Spider-Man: Homecoming was a no-brainer, and this 7" tall figure features 16 points of articulation as well as interchangeable parts. Packaged in display-ready Select figure packaging, with side panel artwork for shelf reference. Sculpted by Gentle Giant Studios!
If Diamond follow suit with previous figures, then the interchangeable parts are almost certainly going to be hand and web options. It is unlikely for this general release to come with an unmasked Tom Holland head, that will most likely end up as the Disney Store only exclusive.
The ETA on the figure is listed by BBTS as July 2017. This seems ambitious as the general practice for previous movie figures from Diamond is them hitting 3 months after the film premieres (this was the case most recently with Civil War and Doctor Strange). With Homecoming due for release on 7th July, then October seems a more likely release window - although we would love to be proved wrong.