When will it become available in ANSI layout?
There are 18 variants of the US-ANSI models available to suppliers in August 2018, but really 3 versions of the keyboard.
The codes are pretty easy to interpret: [Type]-[Model]-[Color]. The Realforce R2 banner is the top right area of the keyboard which has a different style/color depending on the 'type'.
R2TL (10 keyless - standard)Realforce Banner - Gunmetal motif
3 weights - Variable (30/45/55g), Uniform 30g, Uniform 55g
2 colors - black [BK], ivory [IV]
R2TLS (Silent)Realforce Banner - Bronze motif
3 weights - Variable (30/45/55g), Uniform 30g, Uniform 55g
2 colors - black [BK], ivory [IV]
R2TLA (APC)Realforce Banner - Silver motif
3 weights - Variable (30/45/55g), Uniform 30g, Uniform 55g
2 colors - black [BK], ivory [IV]
Source (Japanese):
http://v4.eir-parts.net/v4Contents/View.aspx?template=announcement&sid=42394&code=5975No word on US-ANSI full sized keyboard; maybe later - if I recall, the TKL Japanese model only came out in March, after the launch of the full sized Japanese model last year; so they've done the reverse.
Note: What makes the "PFU Limited Edition" special is, it is the only current ANSI version of the Realforce R2 keyboard that has both APC and Silence (HHKB style Type-S); it has a Carbon Fibre design motif and it is Uniform 45g (like a HHKB). So two variants of another version of the keyboard - making 20 variants; 4 versions of the US-ANSI style Realforce R2's.
R2TLSA (Silent, APC) - Realforce R2 PFU Ltd EditionRealforce Banner - Carbon Fibre motif
Only comes in one weight - Uniform 45g
2 colors - black [BK], ivory [IV]
As per the Amazon page, due to popularity of the pre-order, the free wooden palm rest is out of stock and won't be shipped until after August 23. There's an alternative one... Anyway, the deal with the free palm rest ends tomorrow (30/7), so if you haven't ordered, you might want to.