We last highlighted Fhotoroom back in March, but we're well aware that the developers haven't been idle, with the version number leaping and (err.....) jumping from v3 to version 9.x in the intervening six months. We do have a rough changelog of what's new since our first look though and it's safe to say that this is the premiere 'filter and share' application on Windows Phone at present.

Since our first look at Fhotoroom, here's an approximate changelog for the latest v9.1.4:

• All new Camera interface
• All new TiltShift Filter, plus now supports Pinch, Rotate, Tap, Drag, and Warp
• Support for 22MP Photo Editing on 2GB phones with all filters (i.e. the Lumia 1020), and up to 12MP Photo Editing on 1GB phones with all filters (i.e. the Lumia 920/925/928 etc.)
• Pinch to Zoom on photos
• Faster processing (up to 5x)
• Updating Photo Messages after uploading now supported
• You can now delete Your own Post from anywhere
• You can now delete any comment on your photos
• The Crop function now has 10 sizes to it, 2 static and 4 swappable
• Frame Filters are now adjustable (Trim 1&2, Glass, Square Black, Square White)
• Numerous bug fixes and cosmetic tweaks 

Here's Fhotoroom in action:

The opening shared photo panorama is split into 'recent', 'popular' and 'interesting', all views that pop up again in the lockscreen section, below; (right) picking a photo from my phone and bringing up the 'editing' palette/carousel. Further along from these options are more staid but useful functions as 'brightness', 'saturation' and 'contrast'. ('Styles' is the palette of traditional Instagram-style image degraders.)

Each image editing function comes with its own sliders, so that you can vary the effect or process; (right) applying an artistic frame

In addition to sharing via your social networks, it's also easy to save edited photos to your SkyDrive; (right) the main Settings dialog - note the 'Bandwidth Saver' option to activate if you'd rather prioritise data savings over absolute JPG quality.

The lockscreen creator is a nice idea, putting together photos from the three main views or your own Fhotoroom feed into a collage lockscreen that updates regularly.

The new inbuilt camera interface, centred around two thumb use and very quick to use in practice. This also appears as a 'lens', for use in the wider Windows Phone camera system.

Overlooking some of the more gimmicky filters, there are plenty of genuinely useful editing effects here, plus resolution is maintained throughout. Highly recommended. You can download Fhotoroom for free here in the Windows Phone Store.