We’ve just released version 1.5 of Reeltime Pro and Lite! Among other improvements the latest version includes the following highlights :

• New frame lines filter: Overlay up to four different frame lines with customizable ratios and appearances to support image composition. You can also import ARRI Frame Line & Lens Illumination Tool XML or ASC-FDL files provided by post-production or the camera department. 
• Various filter enhancements: Existing filters (e.g., crop and anamorphic de-squeeze) are refined, your favourite filter settings can now be stored and shared as presets, and a new lock mechanism prevents unintended changes. 
• 3×2 and 3×3 composite layouts: New multi-view layouts offer greater flexibility for multi-camera and multi-source monitoring. [Pro only]
• Improved video I/O support: You can now set a fixed output format independent of the input signal to ensure a stable, continuous output even if the signal drops or changes, e.g., during camera repositioning. Plus, raising the output refresh rate can reduce added latency to just 1 frame!

Find a comprehensive list of all new features here: 
What’s new in Reeltime Pro v1.5
What’s new in Reeltime Lite v1.5