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If the canes have not already been cut back to approximately 15-22cm (6-9in) prior to planting, this should be done immediately afterwards. This will encourage new growth from beneath the soil level. The existing cane will normally (but not always) produce fresh growth in the spring but the new growth from beneath the soil level may not show until the early part of the summer. When the new growth appears, the existing cane should be cut down to ground level to ensure the production of strong new canes.

http://www.kenmuir.co.uk/image/data/pdf/Growing%20Guides/Last%20GUIDE%20TO%20GROWING%20RASPBERRIES_.pdf

If Rolex's success with rainbow models is any indication I think these will be a massive hit. Both 37mm and 41mm represent sweet-spot sizes for a lot of link people. This may link be listed as a women's novelty but it wouldn't shock me to see a link lot of men rocking these.