(As per World Archery Communication, from WA website)
World Archery informs that the rule on the instinctive bow has been modified with immediate effect. The way the rule was written prevented many existing bows that were intended to be used in events from being no longer allowed or it was left to the interpretation of the judge on how to measure the laminations.
The new text is:
A bow of any type, which complies with the common meaning of the word bow as used in target archery, consisting of a handle (grip), riser (no shoot-through type) and two flexible limbs each ending in a tip with a string nock. The riser is produced of a natural or resin based material (e.g. wood, bamboo, horn, cloth, fibreglass, etc., but not carbon/graphite or metal). The riser must be of laminated construction or one piece of wood. The bow may be of a take-down type and may incorporate factory installed metal fittings in the riser for limb attachment, sight mount inserts, cushion plunger insert and stabiliser bushings only. The bow may include a single adjustable limb for tiller adjustment only, but may not have adjustable limb pockets for bow weight adjustment. The riser may include multiple natural or synthetic laminates for use in limb/pocket protection or for structural use within the riser, but no carbon/graphite or metal laminates are allowed. The riser must contain some wood or bamboo. For non-takedown bows, limb laminates of any material that fade into the riser section are permitted.
The bow as described above shall be bare, except for a simple plastic industry standard glued arrow rest (see Article 22.4.3 of Rule Book 4) and free from protrusions, sights or sight marks, marks or blemishes or laminated pieces (within the bow window area).