AUSTIN (Austin Business Journal) — Plans for a huge mixed-use project on Riverside Drive in east Austin now call for inclusion of a 65,000-square-foot venue for live shows and events as developers continue tweaking an initiative that has spent years on the drawing board. The development — called River Park — will sit on 109 acres between Roy G. Guerrero Colorado River Metro Park, E. Riverside Dr., Pleasant Valley Road and Country Club Creek. Dallas-based Presidium Group LLC, which is working on the project with Partners Group, released updates regarding it earlier this month, including plans for the entertainment venue and changes to some other elements. River Park will be developed over 10 to 20 years and will feature multifamily units, office, retail, parkland and the entertainment venue, according to Presidium — although no date for a groundbreaking has been announced. Read more from Austin Business Journal online.