Hillsborough County; Creates Land Reserve Stewardship District; establishes compliance with minimum requirements for creation of independent special district; establishes legal boundaries of district; provides for jurisdiction & charter & governing board; provides method for transition of board from landowner control to control by resident electors of district; provides for district manager, district employees, district treasurer, selection of public depository, & district budgets & financial reports; provides general powers of district; provides special powers of district to plan, finance, & provide community infrastructure & services within district; provides for bonds, borrowing, trust agreements, future ad valorem taxation, special assessments, issuance of certificates of indebtedness & tax liens; provides requirements for termination, contraction, or expansion of district; authorizes mergers; provides for required notices to purchasers of residential units within district; provides for referendum.