Here's the link to the release including the FA invites. Looks like the Casavant invite news on the Q site was incorrect.
http://capitals.nhl.com/club/news.htm?id=587796
3 goalies:
78 Brandon Anderson contract
31 Philipp Grubauer contract
40 Steffen Soberg Caps pick/unsigned
8 dmen:
68 Brett Flemming contract
81 Dmitry Orlov contract
66 Dustin Stevenson contract
98 Nick Tabisz SC contract
65 Samuel Carrier Caps pick/unsigned
97 Tyler Ludwig FA invite signed with Tyler Americans
94 Jimmy Oligny FA invite
47 Scott Wietecha FA invite
13 forwards:
50 Cody Eakin contract
49 Stanislav Galiev contract
76 Garrett Mitchell contract
54 Danick Paquette contract
33 Mattias Sjogren contract
89 David De Kastrozza Hershey contract
96 Taylor Stefishen Caps rights/ unsigned
88 Reid Edmondson FA invite
61 Mitch Elliot FA invite
95 Thomas Frazee FA invite
87 Samuel Henley FA invite
73 Luke Lockhart FA invite
63 Garrett Ross FA invite