New Slic3r version 1.0.0RC1 is Out! Featuring built-in automatic STL repair

New Slic3r is out with many new features! Huraaaaaayyy!

From the news post:

Major new features:

• built-in automatic STL repair
• OpenGL 3D preview of the repaired file (thanks to iXce for the initial work); also supports multi-material files
• ability to override individual config options for each object in the same print job
• new support material rewritten from scratch
• new Ooze Prevention feature for multiple extruders (park extruders outside skirt and drop temperature by a specified delta)
• options to avoid starting loops on convex vertices and/or overhangs
• volume calculation
• ability to customize how materials are mapped to extruders
• new First Layer Acceleration option
• new option to use firmware-controlled retraction (G10/G11)
• new option to use a distinct extruder for support material interface

Improvements:

• Slic3r is now much faster because many mature parts of code were rewritten in C++ for faster processing and less memory usage (Slic3r is now 40% C++)
• most of memory is now truly shared between threads, reducing the total footprint
• improved infill patterns and bridge detection
• the automated test suite was largely enriched
• don't combine retract and travel anymore when using G0 (Mach3 compatibility)
• better Makerbot (Makerware/Sailfish) compatibility
• Windows binaries are now built with Expat for faster AMF parsing
• Minor improvements:
• new [layer_num] placeholder in layer-change G-code
• custom G-code can be supplied via command line too
• some options were renamed or rearranged for clarity
• new --info command line option to get information about the file
• add .ngc to supported G-code suffixes
• the wizard now saves initial profiles automatically
• automatically copy Simple Mode settings into a 'Simple Mode' preset in Expert Mode

Changes:

• layer height ranges are scaled automatically when object is scaled in plater
• avoid G92 E0 for sailfish output
• the "Infill every n layers" option was renamed to "Combine infill every n layers" to clarify its purpose

Bugfixes:

• several threading issues were fixed
• some situations causing incomplete infill were fixed
• fixed regression causing wrong direction for inwards move in holes, thus little blobs
• fix crash on Windows when username had non-ASCII characters
• some spiral vase prints had little gaps in the loops
• Z-offset was not applied to spiral vase prints
• lift was not working correctly with multiple extruders and multiple skirt layers
• fix speed math for wipe, which was causing too fast retraction
• other minor fixes

http://slic3r.org/releases/1.0.0RC1


Update:

Here are some possible bugs screen-captured by Radusava