Dan Gilbert's team has two months to submit its development and financing plans to the Detroit Downtown Development Authority for its plan to build a new high-rise building on the former J.L. Hudson's department store site.

It's possible that building, which would sit on the vacant 2-acre site on Woodward, could come in at 60 stories, sources are telling me.

At that height, it would dwarf virtually everything surrounding it, including the nearby David Stott Building, which is 38 stories in Capitol Park at 1150 Griswold St.

The 60-story height is one of several possibilities being weighed by Gilbert's Rock Ventures LLC, I'm told. It's not known exactly how many designs are under consideration. Rock Senior Communications Manager Carolyn Artman said the company "doesn't comment on rumors and speculation."

Renderings of the planned structure were expected to be released within two months of a DDA vote on April 27, but they have not yet been made public.

I'm told that at least part of the reason for that is Gilbert's team has yet to decide on the exact programming for the building.

A year ago, after the release of a conceptual rendering of the site, Gilbert said in a statement that although the plans were evolving, it was expected to become the site of "an iconic building that will have some ties to Detroit's past, but more importantly, represent Detroit's rebirth into a creative and high-tech future."

One of the most recent formal actions on the project was the DDA approval of the sale of a 900-space parking garage underneath the site. Officials said at the time that the project includes at least 225,000 square feet of mixed use space, 700 parking spaces and 250 residential units. Dozens of retailers and restaurants are expected to be part of the project, which has been in the works for years.

The DDA's approved timeline has groundbreaking currently set for April 1 and the majority of the construction work to be completed by April 2020, but nothing says that couldn't change.

Gilbert controls the site through his Rosko Development Co. LLC, which is registered to Howard Luckoff, who joined Rock Ventures on Aug. 1 as its general counsel after years with Detroit-based law firm Honigman Miller Schwartz and Cohn LLP.

The Hudson's department store was imploded in 1998.

Gilbert is the founder and chairman of Detroit-based Quicken Loans Inc. and Rock Ventures.

Quicken says Gilbert has purchased more than 95 properties in and around downtown Detroit totaling more than 15 million square feet, with an investment of more than $2.2 billion, according to its most recent public tally.