Available now at Selfridges in the UK: the Guerlain Heritage Case, a collector's edition (205 sets will be sold worldwide) comprising 18 Guerlain fragrances in a a leather case. Selfridges only lists two of the 18 fragrances (Eau de Cologne Impériale & Cruel Gardénia), but others I can make out in the picture include Vetiver, L'Instant, Bois d'Armenie, Iris Ganache. The price, not surprisingly, is not listed online.
If anyone calls to find out how much it is or what else is in there, do let us know, and many thanks to Christine for the link!
Update: a reader (thanks Susan!) says it retails for £734.
Another update: another reader (thanks Jacob!) says it goes for £2200, and it includes Angélique Noire, Bois d’Arménie, Cologne du 68, Cologne Impériale, Cuir Beluga, Habit Rouge, Insolence, Iris Ganache, Jicky, L'Heure Bleue, L’Instant, L’Instant pour Homme, Mitsouko, Nahema, Rose Barbare, Samsara, Shalimar and Vetiver. He also notes that you can see a similar case at the monsieurguerlain blog (scroll down); that version was introduced last year.