What does 西洋の城 look like on HTC?

On HTC it is the design shipped in Sense 8, shown above at full size. Older revisions are listed beneath it.

When did HTC add 西洋の城?

HTC first drew 西洋の城 in Sense 7, released 2015年3月30日.

HTC Corporation has shipped 2 versions of 西洋の城. Each is dated, so you can see when the design changed.

HTC

HTC Corporation has drawn 西洋の城 2 times. Every revision HTC has shipped is below, newest first.

What does 西洋の城 look like on HTC?: On HTC it is the design shipped in Sense 8, shown above at full size. Older revisions are listed beneath it.
When did HTC add 西洋の城?: HTC first drew 西洋の城 in Sense 7, released 2015年3月30日.
How many times has HTC redrawn 西洋の城?: HTC Corporation has shipped 2 versions of 西洋の城. Each is dated, so you can see when the design changed.

HTC artwork for this emoji spans 2015 to 2016.